File:Bell's drawing for Patent 161739 granted by U.S. PTO in April 1875.jpg
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English: Bell's drawing for his application for a patent for a primitive fax machine (which he called the "autograph telegraph") showed multiple liquid transmitters.
|Source||Library of Congress|
|Author||Alexander Graham Bell|
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|current||17:28, 22 November 2014||1,467 × 469 (49 KB)||Heritager||User created page with UploadWizard|
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